Instanton‐induced helicity and flavor asymmetries in the light quark sea of the nucleon Available to Purchase

Specific helicity and flavor structure of zero modes of quarks in instanton field allows simultaneously to explain the breaking of both Ellis‐Jaffe and Gottfried sum rules. From the analysis of the recent CCFR Collaboration data for the structure function xF₃(x,Q²) of the deep inelastic neutrino‐nucleon scattering we conclude that Gross‐Llewellyn sum rule is probably violated by the QCD vacuum polarization effects.